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account_asset.py
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account_asset.py
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# -*- encoding: utf-8 -*-
##############################################################################
#
# OpenERP, Open Source Management Solution
# Copyright (c) 2012 Serv. Tecnol. Avanzados (http://www.serviciosbaeza.com)
# Pedro Manuel Baeza <pedro.baeza@serviciosbaeza.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
import calendar
from openerp.osv import orm, fields
from openerp import fields as new_fields
from dateutil.relativedelta import relativedelta
from openerp.tools import DEFAULT_SERVER_DATE_FORMAT as DSDF
class account_asset_category(orm.Model):
_inherit = 'account.asset.category'
_columns = {
'ext_method_time': fields.selection(
[('number', 'Number of Depreciations'),
('end', 'Ending Date'),
('percentage', 'Fixed percentage')], 'Time Method', required=True,
help="Choose the method to use to compute the dates and number of "
"depreciation lines.\n"
" * Number of Depreciations: Fix the number of depreciation "
"lines and the time between 2 depreciations.\n"
" * Ending Date: Choose the time between 2 depreciations "
"and the date the depreciations won't go beyond.\n"
" * Fixed percentage: Choose the time between 2 "
"depreciations and the percentage to depreciate."),
'method_percentage': fields.float('Depreciation percentage',
digits=(3, 2)),
}
_defaults = {
'method_percentage': 100.0,
'ext_method_time': 'percentage',
}
_sql_constraints = [
('method_percentage',
' CHECK (method_percentage > 0 and method_percentage <= 100)',
'Wrong percentage!'),
]
def onchange_ext_method_time(self, cr, uid, ids, ext_method_time,
context=None):
res = {'value': {}}
res['value']['method_time'] = ('end' if ext_method_time == 'end'
else 'number')
return res
class account_asset_asset(orm.Model):
_inherit = 'account.asset.asset'
_columns = {
'move_end_period': fields.boolean("At the end of the period",
help='Move the depreciation entry at'
' the end of the period. If the '
'period are 12 months, it is put on '
'31st of December, and in the end of'
' the month in other case.'),
# Hay que definir un nuevo campo y jugar con los valores del antiguo
# (method_time) para pasar el constraint _check_prorata y no tener que
# modificar mucho código base
'ext_method_time': fields.selection(
[('number', 'Number of Depreciations'),
('end', 'Ending Date'),
('percentage', 'Fixed percentage')], 'Time Method', required=True,
help="Choose the method to use to compute the dates and number of "
"depreciation lines.\n"
" * Number of Depreciations: Fix the number of depreciation "
"lines and the time between 2 depreciations.\n"
" * Ending Date: Choose the time between 2 depreciations "
"and the date the depreciations won't go beyond.\n"
" * Fixed percentage: Choose the time between 2 "
"depreciations and the percentage to depreciate."),
'method_percentage': fields.float('Depreciation percentage',
digits=(3, 2)),
}
_defaults = {
'method_percentage': 100.0,
'ext_method_time': 'percentage',
'move_end_period': True,
}
_sql_constraints = [
('method_percentage',
' CHECK (method_percentage > 0 and method_percentage <= 100)',
'Wrong percentage!'),
]
def onchange_ext_method_time(self, cr, uid, ids, ext_method_time,
context=None):
res = {'value': {}}
res['value']['method_time'] = ('end' if ext_method_time == 'end'
else 'number')
return res
def onchange_category_id(self, cr, uid, ids, category_id, context=None):
res = super(account_asset_asset, self).onchange_category_id(
cr, uid, ids,
category_id, context=context)
if category_id:
category_obj = self.pool.get('account.asset.category')
category = category_obj.browse(cr, uid, category_id,
context=context)
res['value']['ext_method_time'] = category.ext_method_time
res['value']['method_percentage'] = category.method_percentage
return res
def _compute_board_undone_dotation_nb(self, cr, uid, asset,
depreciation_date, total_days,
context=None):
if asset.ext_method_time == 'percentage':
number = 0
percentage = 100.0
while percentage > 0:
if number == 0 and asset.prorata:
days = (total_days -
float(depreciation_date.strftime('%j'))) + 1
percentage -= asset.method_percentage * days / total_days
else:
percentage -= asset.method_percentage
number += 1
return number
else:
val = super(account_asset_asset, self).\
_compute_board_undone_dotation_nb(cr, uid, asset,
depreciation_date,
total_days, context=context)
if depreciation_date.day == 1 and depreciation_date.month == 1 \
and asset.method_period == 12:
# Quitar una depreciación del nº total si el activo se compró
# el 1 de enero, ya que ese año sería completo
val -= 1
return val
def _compute_board_amount(self, cr, uid, asset, i, residual_amount,
amount_to_depr, undone_dotation_number,
posted_depreciation_line_ids, total_days,
depreciation_date, context=None):
if asset.ext_method_time == 'percentage':
# Nuevo tipo de cálculo
if i == undone_dotation_number:
return residual_amount
else:
if i == 1 and asset.prorata:
days = (total_days -
float(depreciation_date.strftime('%j'))) + 1
percentage = asset.method_percentage * days / total_days
else:
percentage = asset.method_percentage
return amount_to_depr * percentage / 100
elif (asset.method == 'linear' and asset.prorata and
i != undone_dotation_number):
# Caso especial de cálculo que cambia
amount = amount_to_depr / asset.method_number
if i == 1:
days = (total_days -
float(depreciation_date.strftime('%j'))) + 1
amount *= days / total_days
return amount
else:
return super(account_asset_asset, self)._compute_board_amount(
cr, uid, asset, i, residual_amount, amount_to_depr,
undone_dotation_number, posted_depreciation_line_ids,
total_days, depreciation_date, context=context)
def compute_depreciation_board(self, cr, uid, ids, context=None):
super(account_asset_asset, self).compute_depreciation_board(
cr, uid,
ids, context=context)
for asset in self.browse(cr, uid, ids, context=context):
if asset.move_end_period:
# Reescribir la fecha de la depreciación
depr_lin_obj = self.pool.get('account.asset.depreciation.line')
new_depr_line_ids = depr_lin_obj.search(
cr, uid,
[('asset_id', '=', asset.id), ('move_id', '=', False)])
# En el caso de que la fecha de última amortización no sea
# la de compra se debe generar el cuadro al período siguiente
depreciation_date = new_fields.Date.\
from_string(self.
_get_last_depreciation_date(cr, uid,
[asset.id],
context)[asset.id])
initial_date = asset.purchase_date
fixed_depreciation = depreciation_date != new_fields.Date.\
from_string(initial_date)
nb = 0
for depr_line in depr_lin_obj.browse(cr, uid,
new_depr_line_ids):
depr_date = new_fields.Date.from_string(
depr_line.depreciation_date)
if fixed_depreciation:
if depr_date.day != 1:
depr_date += relativedelta(
months=+asset.method_period)
if asset.method_period == 12:
depr_date = depr_date.replace(depr_date.year, 12, 31)
else:
if not asset.prorata:
if depr_date.day != 1:
depr_date = depreciation_date + relativedelta(
months=+ (asset.method_period * (nb+1)))
else:
depr_date = depreciation_date + relativedelta(
months=+ (asset.method_period * nb))
nb += 1
last_month_day = calendar.monthrange(
depr_date.year, depr_date.month)[1]
depr_date = depr_date.replace(depr_date.year,
depr_date.month,
last_month_day)
depr_lin_obj.write(
cr, uid, depr_line.id,
{'depreciation_date': depr_date.strftime(DSDF)})
return True
# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: